Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
443-316 0 Woodlawn MD 876D ONVOY, LLC - MD 238   2024-12-02   
443-316 1 Woodlawn MD 876D ONVOY, LLC - MD 238   2024-12-02   
443-316 2 Woodlawn MD 876D ONVOY, LLC - MD 238   2023-05-18   
443-317 2 Chase MD 876D ONVOY, LLC - MD 238   2012-10-08   
443-320 6 Baltimore MD 876D ONVOY, LLC - MD 238   2024-01-06   
443-320 8 Baltimore MD 876D ONVOY, LLC - MD 238   2024-01-06   
443-322 3 Towson MD 876D ONVOY, LLC - MD 238   2020-06-04   
443-328 0 Sykesville MD 876D ONVOY, LLC - MD 238   2021-04-29   
443-331 2 Taneytown MD 876D ONVOY, LLC - MD 238   2024-03-03   
443-331 4 Taneytown MD 876D ONVOY, LLC - MD 238   2016-03-21   
443-331 5 Taneytown MD 876D ONVOY, LLC - MD 238   2016-03-21   
443-331 9 Taneytown MD 876D ONVOY, LLC - MD 238   2016-04-08   
443-332 3 Crofton MD 876D ONVOY, LLC - MD 238   2024-03-03   
443-332 7 Crofton MD 876D ONVOY, LLC - MD 238   2021-04-29   
443-332 9 Crofton MD 876D ONVOY, LLC - MD 238   2021-04-29   
443-335 8 Brooklyn Park-Linthicum MD 876D ONVOY, LLC - MD 238   2021-03-04   
443-335 9 Brooklyn Park-Linthicum MD 876D ONVOY, LLC - MD 238   2021-03-04   
443-338 8 Sparks-Glencoe MD 876D ONVOY, LLC - MD 238   2016-03-26   
443-338 9 Sparks-Glencoe MD 876D ONVOY, LLC - MD 238   2016-03-26   
443-339 5 Sherwood Forest MD 876D ONVOY, LLC - MD 238   2016-03-18   
443-339 6 Sherwood Forest MD 876D ONVOY, LLC - MD 238   2016-03-18   
443-339 8 Sherwood Forest MD 876D ONVOY, LLC - MD 238   2014-09-27   
443-339 9 Sherwood Forest MD 876D ONVOY, LLC - MD 238   2014-09-27   
443-342 2 Solomons MD 876D ONVOY, LLC - MD 238   2016-04-04   
443-342 3 Solomons MD 876D ONVOY, LLC - MD 238   2014-09-13   
443-342 9 Solomons MD 876D ONVOY, LLC - MD 238   2016-04-04   
443-346 1 Severna Park MD 876D ONVOY, LLC - MD 238   2021-05-21   
443-347 0 Cardiff MD 876D ONVOY, LLC - MD 238   2016-03-31   
443-347 5 Cardiff MD 876D ONVOY, LLC - MD 238   2016-03-14   
443-347 6 Cardiff MD 876D ONVOY, LLC - MD 238   2016-03-14   
443-348 0 Woodlawn MD 876D ONVOY, LLC - MD 238   2024-03-08   
443-348 9 Woodlawn MD 876D ONVOY, LLC - MD 238   2024-04-14   
443-351 6 Odenton MD 876D ONVOY, LLC - MD 238   2024-03-01   
443-360 3 Aberdeen MD 876D ONVOY, LLC - MD 236   2012-02-29   
443-363 0 Severn MD 876D ONVOY, LLC - MD 238   2024-04-14   
443-363 1 Severn MD 876D ONVOY, LLC - MD 238   2024-04-14   
443-363 5 Severn MD 876D ONVOY, LLC - MD 238   2024-04-14   
443-364 3 Ellicott City MD 876D ONVOY, LLC - MD 238   2012-02-29   
443-375 5 Hampstead MD 876D ONVOY, LLC - MD 238   2024-04-19   
443-378 9 Baltimore MD 876D ONVOY, LLC - MD 238   2024-02-24   
443-381 0 Reisterstown MD 876D ONVOY, LLC - MD 238   2021-09-23   
443-381 6 Reisterstown MD 876D ONVOY, LLC - MD 238   2024-03-09   
443-381 7 Reisterstown MD 876D ONVOY, LLC - MD 238   2024-05-03   
443-383 3 Silver Run MD 876D ONVOY, LLC - MD 238   2016-03-25   
443-383 4 Silver Run MD 876D ONVOY, LLC - MD 238   2016-03-25   
443-390 0 Churchville MD 876D ONVOY, LLC - MD 238   2025-09-06   
443-390 1 Churchville MD 876D ONVOY, LLC - MD 238   2025-10-12   
443-390 4 Churchville MD 876D ONVOY, LLC - MD 238   2025-12-14   
443-390 5 Churchville MD 876D ONVOY, LLC - MD 238   2024-03-03   
443-390 7 Churchville MD 876D ONVOY, LLC - MD 238   2012-10-08   

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Last updated: Tue, 01 Sep 2026 00:40:05 UTC

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